• Compartment (heraldry), a component of heraldic display.
• Compartment (vehicle), a compartment in a passenger car (in Europe), sleeping car or any vehicle.
• Compartment (vessel), a compartment in a any ship, boat, or submarine.
• Compartments in mathematical modelling, see Multi-compartment model.

In biology

• Compartment (anatomy), a space of connective tissue between muscles.
• Compartment (chemistry), in which different parts of the same protein serves different functions.
• Compartment (development), fields of cells of distinct cell lineage, cell affinity, and genetic identity.
• Compartment (pharmacokinetics), a defined and distinct volume of body fluids.
• Cell compartment, a space enclosed by a membrane

See also

• compartmentalization